Question

ii. bisector
iii. line: an undefined term in geometry which goes forever in two opposite directions and has no thickness.
iv. segment: an undefined term in geometry that goes forever in all directions and has no thickness.
v. \half - line\ that starts at a point and goes on forever in one direction.
vi. points or lines that do not lie in the same plane.
vii. points that do not lie on the same line.
viii. a point, line, part of a line or plane that divides a segment into two congruent segments.
iv. two lines that intersect to form a right angle

Explanation:

iii. A line is an undefined term in geometry with the described properties.
iv. A plane is the undefined term that extends infinitely in all directions with no thickness.
v. A ray is a "half - line" starting at a point and going on forever in one direction.
vi. Non - coplanar points or lines do not lie in the same plane.
vii. Non - collinear points do not lie on the same line.
viii. A bisector divides a segment into two congruent segments.
ix. Perpendicular lines intersect to form a right angle.

Answer:

iii. Line
iv. Plane
v. Ray
vi. Non - coplanar
vii. Non - collinear
viii. Bisector
ix. Perpendicular lines